Educational device



R. J. BROWN EDUCATIONAL DEVICE Filed Sept.- 1o ,."1924 2 SheetS-Shqefc 1 Jj.i.

Qwumtoz RJBI bwm/ Patented Jan. 13, 1%25.

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Bonner :r. BROWN, or snaomon'r, TEXAS, ASSIGNOR OF ONE-HALF '10 Jenn w. REAIVIES, or nas'rnor, LOUISIANA.

EDUCATIONAL DEVICE.

Application filed. September 10, 192%. Serial No. "736,940.

To all whom it may concern: 7

Be it known thatl, Bonner J. BROWN, a citizen of the United States, residing at Beaumont, in the county of Jefferson, State of Texas, have invented new and useful Educational Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappert-ains to make and use the same.

The invention relates to educational devices particularly adapted for use in schools, and has for its ohjectto provide a device whereby an ocular demonstration can be given of'the movement of the earth on its 7 axis and simultaneously in; its orbit for illustrating to students the movement of the earth.

A further object is to provide an annular member by means of which in connection with the movable globe the causes of the seasons can be demonstrated to students.

A further object is "to mount the globe on a sleeve rotatably mounted on an angular portion of a vertical shaft and provide said sleeve with gear connections with a sleeve rotatably mounted on the vertical shaft, and which second sleeve has a gear connection with an internal rack whereby during a planetary movement of the vertical shaft, the globe will be simultaneously rotated on its axis thereby simulating the movement of the earth on its axis during its planetary movement.

A further object is to mount the vertically disposed shaft on a bar, the ends of which bar are pivotally connected to arms in parallel relation to each other, and which arms are carried by spaced gears which are driven by an intermediate gear, said arms and bar form. means whereby the vertically disposed shaft will have a planetary movement during the rotation of the spaced gears in opposite directions by;the'intermedi'ate gear. Also to dispose the spaced and intermediate gears on the upper side of a base and to drive the intermediate gear from a shaft carried thereby which extends into a chamber of the base and is provided with a bevelled gear connection with an operating crank, thereby allowing the device to be manually operated.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed. it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing:

Figure 1 is a top plan view of the device, part being broken away to better show the structure.

Figure 2 is a vertical longitudinal sectional view through the device.

Figure 8 is a :front elevation of the device.

Referring to the drawing, the numeral 1 designates the base ofthe device, which base is provided with a chamber 2. Extending vertically through the chamber 2 is an operating shaft 3, which shaft is provided with a bevelled gear 4, with which bevelled gear. the driving bevelled gear 5 meshes. The driving bevelled gear 5 is carried by a horizontally disposed shaft 6, which extends through the chamber 2 and terminates in an operating crank 7 disposed adjacent one side of the base 1 in a position where it may be easily grasped by the operator for operating the mechanism hereinafter set forth. It is to be understood that however, if desired the device may be operated in any other suitable manner, for instance by an electric motor. Rot-atably mounted in bearings of the base 1 at opposite sides of the shaft 3 are vertically disposed shafts 8, which shafts have secured thereto gears 9, which mesh with an intermediate gear 10 carried by the upper end of the shaft 3. therefore itwill be seen that when the shaft 3 is rotated in the direction of the arrow a, the gear 9 will be simultaneously rotated in the direction of the arrow 7). The upper ends of the shafts 8 are provided with parallel outwardly extending arms 11, the outer ends of which are provided with upwardly extending members 12 on which are pivotally connected the ends 13 of a horizontally disposed bar 14. and which bar during the rotation of the gears 9 in the direction of the arrows b is moved by the parallel arms 11 to impart a planetary movement to the vertically disthe movement of posed shaft 15, carried by the bar 14. the purpose of which will presently appear.

Rotatably mounted on the vertically disposed shaft 15 is a sleeve 16, which sleeve is provided with a gear 17 which meshes with the internal gear 18 supported on the base 1 and concentric with the shaft 3, therefore it will be seen that when a planetar 1 movement is imparted on' the shaft 15, the sleeve 16 will rotate for imparting rotation to the globe 19, rotatably'mounted on the angularly disposed portion 20 of the shaft 15 through the medium of the bevelled gears 21, and that a planetary as well as a revoluble movement is imparted to the globe 19 similar to the movement of the earth in re lation to the sun 22. The angular portion 20 of the shaft 15 is inclined at about 23 at which angle the earth sets in relation to the sun. The ratio of the gears 18 and 17 and 21 is such that when the shaft 15 makes acomplete planetary movement, the globe 19 will be caused to make three hundred and sixty five turns or rotations, representing the number of days in a year, therefore it will be seen that the globe 19 will simulate the earth on its inclined axis in relation to the sun. During the r0 tation of the gears 9 in the direction of the ar 'ows b the arms 11 are rotated and maintained in parallel relation and the bar 14 will be rotated but maintained at all times in the transverse position in relation to the device as shown in Figure 1, therefore it will be seen that thegear 17 will receive an accurate planetary movement. If desired the interna gear 18 may be provided with marks 23 for indicating the seasons of the year in relation to the positions of the globe 19, therefore .an ocular demonstration may be given as to the relation of the earth to the sun during the various seasons of the year.

From the above it will be seen that an educational appliance is provided whereby ocular illustrations may be given of the movement of the earth in its orbit in relation to the sun, and the rotation of the earth on its axis during the movement thereof in its orbit. Also the seasons indicated. The device is particularly adaptedfonuse in schools, and it has been found'that students especially children experience considerable difficulty in grasping and retaining facts relative to the movement of the earth and seasons from-reading matter and from description, however where an ocular demonstration is given, the retained.

The invention having been sctforth what is claimed as new and useful is 1. An educational device whereby the position of the earth in relation to'the sun and the rotation of the earthen its axis may be simulated, said device comprising a base, spaced gears carried by said base androtatprinciple is easily learned and prising a base,

ably mounted, an intermediate gear meshing with said spaced gears, means for rotating the intermediate gear, radially disposed device for simulating the movement of the earth, said device comspaced gears rotatably mounted on said base, a drive gear between the spaced gears and meshing therewith, means for rotatingsaid drive gear, radially disposed arms carried by thespac'ed gears in parallel relation to each other, a bar connecting the radially disposed armstogether and movable in transverse relation to the base during its rotation by the gears, a gear ring above said base, a' vertically disposed shaft carried by said bar adjacent one side of the gear ring, "a sleeve rotatablym'ounted on the vertically disposedshaft, a gear carried by said sleeve and meshing with the gear ring, an angularly disposed member carried by the upper end of the shaft, a sleeve rotatably mounted on the angularly disposed member, gear-connections between the sleeves, and a globe carried by the sleeve on the angularly disposed member,

said globe being rotated during the planetary movement of the vertically disposed shaft.

3. The combination with an educational device for simulating the movement of the earth on its orbit prising a gear ring, a vertically disposed shaft adjacent said gear ring, means for moving said simultaneously rotating a globe supported by the shaft, said means comprising an angularly disposed portion carried by the upper end of the shaft, a sleeve rotatably mounted on the angularly disposed portion, a globe carried by said sleeve, a sleeve rotatably mounted on the shaft, gear connections between the sleeves and a gear carried by the sleeve on a vertically disposed shaft and meshing with the gear ring 4:. An educational device comprising a base, spaced gears carried by said base, a drive gear meshing with said gears, gear means for rotating'said drive gear, radially disposed arms carried by" the spaced gears in parallel relation to each other, a bar conand axis, said device comshaft in a circle, of means for carried by the bar and movable in a circle by said bar, a gear ring, a sleeverotatably mounted on the shaft, gear connections between the sleeve and gear ring, a. globe rotatably mounted on the shaft and gear connections between the sleeve and the globe and forming means whereby during the 1'0- tation of the shaft in a circle said globe will be simultaneously rotated on its axle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' ROBERT J. BROVN.

Vitnesses TOBE HAHN, CARMEN SHARPE. 

